Jaberzadeh A.,Islamic Azad University at Varamin |
Moaveni P.,Islamic Azad University at Tehran |
Tohidi Moghadam H.R.,Islamic Azad University at Varamin |
Zahedi H.,Islamic Azad University at Eslamshahr
Notulae Botanicae Horti Agrobotanici Cluj-Napoca | Year: 2013
Titanium (Ti) is a very interesting chemical element, especially physiologically. Although Ti is not toxic for animals and humans, its effects on plants show remarkable concentration dependence. Whereas for plants, it shows beneficial effects on various physiological parameters at low doses. This study was conducted to evaluate the effect of bulk and nanoparticles titanium foliar application on some agronomic traits, seed gluten and starch contents of wheat under water deficit stress conditions during 2010-2011 growing seasons. The experimental design was randomized in complete blocks arranged in split-split plots with four replications. The factors included normal irrigation, water deficit stress (irrigation withholding at two growing stages of stem elongation and flowering), two growing stages for water deficit stress induction and titanium applications, five titanium concentrations, sources including control of titanium oxide (bulk), and three concentrations of 0.01%, 0.02%, and 0.03% of titanium dioxide nanoparticles. Plant height, ear weight, ear number, seed number, 1000-seed weight, final yield, biomass, harvest index, gluten, and starch contents were assayed. The results showed that water deficit stress caused significant decrease in plant growth, yield and yield components. In addition, among the different titanium treatments, titanium dioxide nanoparticles at 0.02% increased almost all agronomic traits including gluten and starch content. Thus, the application of titanium dioxide nanoparticles under conditions of water deficit stress is recommended.
Kazemi M.,Islamic Azad University at Eslamshahr |
Verchery G.,Institut Superieur des Materiaux et Mecaniques Avances du Mans
Composite Structures | Year: 2016
Buckling strength is the most important design criterion for laminated composite structures subjected to compressive loading. The aim of the present work is to introduce an explicit procedure in designing laminated composite plates for maximum buckling load subjected to strength and stiffness constraints using the polar formalism, which relates stiffness to the critical buckling load in order to simplify the calculation and optimization of the buckling load. The polar representation of plane elasticity is effectively used in this work in order to introduce a unified optimization method. Design for maximum flexural stiffness as well as laminate effective elastic modulus was developed in order to achieve the optimal orientation of the layers giving the maximum buckling strength. Three optimization procedures were proposed. The first one is unconstrained optimization and the two other cases are constrained optimization subjected to the flexural stiffness and the elastic modulus constraints. The quasi-homogeneous laminates, which have been used as a special class of laminate stacks, were proposed as the general solution for the optimal stacking sequence of the layers. © 2016 Elsevier Ltd.
Alizadeh A.,Islamic Azad University at Eslamshahr
Advances in Environmental Biology | Year: 2012
Trichotillomania, which is classified as an impulse control disorder by DSM-IV, is the compulsive urge to pull out one's own hair leading to noticeable hair loss. The research has done ona group of patients who developed to TTM in Iran. This group of patients had experienced medical treatment before coming to psychotherapy. The assessment of patients showed that they have conflict with his or her parent and usually belong to poor families. The psychotherapy process focused on the problem and solved that conflict. After 3 months they achieved his or her hair conspicuously. Their conflict with the parentsincluded their relationship with friends, style of studying, clothing and things like these. When they and parents learned to solve this problem with speaking and attend to each other's beliefs without challenging, their tension decreased. Additionally, the patients taught to use Habit Reversal Training to control his or her impulsive behavior that led to hair pulling.
Khorami M.,Islamic Azad University at Eslamshahr |
Sobhani J.,Housing and Urban Development Research Center
International Journal of Civil Engineering | Year: 2013
Worldwide, asbestos fibers utilized in fiber cement boards, have been recognized as harmful materials regarding the public health and environmental pollutions. These concerns motivate the researchers to find the appropriate alternatives to substitute the asbestos material towards the sustainability policies. In this paper, the applicability of asbestos replacement with three types of agricultural waste fibers, including bagasse, wheat and eucalyptus fibers were experimentally investigated. To this end, the flexural behaviour and microstructure of cement composite boards made by addition of 2% and 4% of waste agricultural fibers in combination with and without 5% replacement of silica fume by mass of cement were evaluated. The results of this study attested the applicability of utilized waste agricultural fibers in production of cement composite boards by improving the flexural and energy absorption characteristics, more or less, depending on the type of fibers. Moreover, it is found that application of silica fume in production of cement composite boards led to an increase in flexural strength.
Sadeghi M.,Islamic Azad University at Eslamshahr
WSEAS Transactions on Systems and Control | Year: 2010
Increasing marketing competition with globalization force companies to expand diversity of the production lines which in turn improve the ability of choosing customizable products, improve the flexibility of system design and maintenance costs lead to a strong trend towards automation and distributed control systems. The plant is constantly adapted to the differences of products to achieve the highest production quality in a shortest possible time and so the automatic control have to be adapted, developed and upgraded based on changes in the plant conditions. Traditional production has typically relied upon a PLC as a Centralized hierarchy of Programmable Logic Controllers which is usually fixed or "hard-wired". For developing the system it should be shut-down and completely rewired which leads to a high cost and time consumption may last at least several weeks in often cases in production process. A new design methodology with open architecture for modeling industrial control systems has been developed. New international standard "IEC 61499", defines event driven functional modules called function blocks which can be distributed to field devices and interconnected across multiple controllers. It used for intelligent and agile control with more Portability, interoperability and configurability adds the system flexibility by adaption and reconfiguration basing on environment changes. It can be used for reducing the cost and complexity of industrial automation process. In this approach IEC61499 Function Blocks concept, Function Block Development Kit (FBDK), Function Block Run Time Environment (FBRT), Netmaster and Automatic Iron Cutting Device using IEC61499 FBs Editor will be discussed.